Type-writing machine



F. A. COOK.

TYPE WRITING MACHINE. APPLICATION FILED JULY mum.

n0 1 9 1 -0 1 m A m m a w IN VENTUR:

WITN ESsESz FRANK A. 060K, OF HAR'I'EGRI), CONNECTICUT, ASSIGNOR TO UNDERWOOD TYPE- WRI'IER COMEANY, OF NEW YORK, IN". Y., A CORPORATION OF DELAWARE.

TYPE- WUEITING MACHINE.

mmm

Specification of Letters Patent.

Patented Aug. 15,

Application filed Silly 17, 1915. Serial No. 40,364.

To all whom it may concern:

Be it known that I, FRANK A. COOK, a citizen of the United States, residing in Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Type- Writing Machines, of which the following the platen.

The present invention has as an ob ect.

is a specification.

This invention relates principally to typewriting machines for writing upon a mini" i081 of superposed webs or continuous sheets,

especially those-which are intended to be torn off in sect-ions from the body of the web, as, for example, when the Webs com- I prise a series of printed forms, each adapted to be removed when the typewriting thereon is completei. in each work it is desirable to eirnpleyink ribbons or carbon sheets interleaved with the webs for making the duplicate copies.

A machine for performing work of this character is shown and described in United States Letters Patent No. 1,132,055, to Lester A. Wernerv and Jesse A. B. Smith, dated.

of the same around the platen, the platen,

when shifted to release the paper, is moved inconjunction with the paper shelf, to a position'such as to provide a clear and relatively straight path for the web; and along this path the web and the carbon sheets receive their adjustments inciden to the removal of writtenlengths from t eweb and to the positioning of the web for further writing. The platen is locked againstacci- -dental displacement from its normal or writmg position; and, formerly, means 1ndependent of the platen-shifting mechanism have been employed-to eilectsuch locking of thereofi the provision of a device for unlocking the platen preliminary to shifting the same, which device forms part of the shifting mechanism, so that upon o 'ieration of the latter the platen is in effect auto matically unlocked. By this means the number of parts is reduced; and a distinct unlocking operation is eliminated to great ad vantage, in that both operations may he done substantially simultaneously with one hand, the operators other hand being; free to attend to the web and carbon sheets.

A further feature of the present invention relates to the gage for determining length of the printed sheets to be removed from the web. Heretoioi'e this gs has been unyieldingly attached to the pane. shelf, with the result that in using the same to re turn the parts to normal position it has often been bent or distorted. Furthermore, sueh attachment did not allow the to be ooh lapsed toward. the machine for compactness when not in use or in packing.

In a form of the invention presently to be described in detail, the gage is pivoted to the platen frame and is held yieldingly in normal position on the latter by a s; Forward movement of the cc. first to release a latch which looks the frame in normal position, and then gage and throw the frame to paper-releasing position. The spring permits backward movement of the gage independently of the frame, so that it may be collapsed toward the machine, and so that it cannot be bent by being used as a means for returning the platen frame to normal position. The gage itself, therefore, in a single forward movement, may have the double function of un:- locking and throwing the platen frame. The gage may, however, be used only as a gage, and another bar or handle, similarly attached, may be used to unlock and move the platen frame.

' Other features andadvantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a View in perspective, showing the platen and assembled mechanism of the pres ent invention'in printing position on the platen carriage. Fig. 2 is a fragmentary view in rear e1evat1on of the parts shown in Fig. 1. Fig. 8 is afraginentary view in side elevation, showing" the parts in normal oi. 11"

printing position, except that gage is collapsed as for packing. Fig. a view in side elevation, showing the parts in normal or printing position. Fig. 515;). View similar to that of Fig. 4, except thatthe platen is shown as unlocked and commencmg its movement to paper-releasing position.

Referring to the drawings, the platen 7,

fixed to .a shaft 8, has bearing on a.fra'me' comprising a pairof plates 9, which directly support the platen. T he platest-arefixed to a rock shaft 10 joui'nale'd in the endnaembers11 of the carriage, so that at certain times the platen may be swung bodily about the swinging frame.

the shaft 10 as an axis. A channel bar 33 ties together the plates 9 to give strength to This frame, with the platen revolubly mounted therein, is, during the printing operation, locked in the posi- %ion shown .in Fig. '1. For locking the rame, a rock shaft 12 carried by the plates 9, has aflixed to it a pair of hooks 13 adapted to engage one of the carriage'tie rods 14.

The ends of the plates 9 are turned at 15,

, andv have seats 16, whereby-the swinging frame may be supported on the rods 14.

.Coil springs 17, each fast at one end to the adjacent hook 13 and atthe other endbearing on the channel bar 33, tend to rock the shaft 12 to. throw the hooks 13 into engagement with the rods 14 andto maintain such 30.

engagement.

.The platen, when printing position,ha s' a line-space movement, preferably effected from the'usualhandwheel 18 or from the ratchet wheel 19, the latter receiving a predetermined throw from a pawl 20 on a slide 21 actuated by a finger key lever22 common to Underwood typewriting machines. The

shaft 23 to which the hand wheel 18 and ratchet wheel.19 are fixed, is mounted to"ro-' tate in the usual way on thecarriage'endpieces, 11. It is connected to the platen shaft by means of gears 24-, 25 and 26. The

' gear 24 is fast to the shaft 23, and the gear 25, which .is of the same size and has the 7 same number of teeth, is fast to the platen j shaft 8, face to face with the gear 24. The' gear 26 in a pinion loosely carried on the shaft 10, which serves as the axis of the swinging platensupporting frame. The .face of'the pinion 26 is of a width to cause it to engage simultaneously with-the teeth of the gears 24 and 25'. Any movement of the hand wheel 18 or line-space mechanism is, therefore,v transmitted to the platen. When the platen is swung by its frame in the paper-releasing and inserting operation, the

gear 26, being on the axis 10, remains in mesh with both the gears 24 and 25.

x In the Patent No. 1,132,055 to Wernery and Smith, above referred to, it is stated that in the operation of removing a printed length from the web, and in readjusting the web for printing the next length, the platen is swung from printing position to a position away from the feedrolls, so that the sition against the feed rolls.

wvard the bar 34.

Web no longer wraps around the platen, but may be .moved freely 'in substantially :1.

- straightline from back to front of the machine. While the platen is in this position,

the carbon sheets between the plies or folds of-thefsection of the web to be removed, are

drawnback into thelength or section of web next to be printed, and after removal of a length of'the web and re-positioning of the web, the platen is returned to its normal po- The forward or paper-releasing throw. of the platen frame is finally arrested by any suitable.

means, as by a stop or screw 47 on the shaft 10 engaging the plate-l6 on the frame. The paper and carbon sheets are fed to the platen over a table'30 having side rails 30.

A bar 31 ties together the table rails 30. Over this bar the web is passed and is then turned down under the platen and up and out at the top, onto a supporting and guidmg shelf 32, which latter, in its normal or printing pos1t1on,.1s inclined upward and rearwardfrom a point near the platen.

' The shelf 32 is secured to and supported by the channel bar 33 which ties'the plates 9 of the swinging frame. The bar 34, which is the gage, has a shoulder or offset 35, and has ears 36 by means of which it is loosely mounted on the rock shaft 12. which carries the platen-locking hooks l3. Collars 37 and and 38 fast to the shaft 12, prevent longitudinal displacement ofthe bar 34. The-collar 37 carries a lug 39 against whichthe bar 34 is normally held by a coil sprin 40 on the shaft 12, one end of the'spriug lb earing against the bar 34 and the other endbe'ing attached to the collar 37. The bar is normally set, at the same angle as the shelf 32, and as it connects to the shaft 12, near the crimped upper edge 41 of the shelf, it may be considered as an extension of the shelf.

Upon feeding or drawing the leading edge of the web up to the offset 35 at the end of the bar, the latter acts as a gage to determine the length of the paper to be removed on each cutting of the web. That the gage may be adjustable as to length, the bar 34 is preferably in two sections united by a .bar against the action of the spring 17 causes the bar, by reason of its engagement with the lug 39 on the'shaft 12, to rock that shaft, thus moving the hooks 13 to Fig. 5

position in which the platen is unlocked from the bar 14. To permit this movement of the bar without movement of the frame as a whole, the shelf 32 is cut away at 45. Continued movement of the bar causes the bar to strike the shelf 32, and thereafter to swing the frame andall parts carried by it, to a position (shown and described in, the

patent hereinbefore referred to), in which the shelf 32 and the bar extend horizontally forward of the platen in substantial continuation of the table 30*, with the platen well elevated above the feed rolls. The handle 44 being attached to the rock shaft 12, acts in the same way as the gage bar, to unlock and shift the platen; the shelf 32' being cut away at 44 to permit of-the preliminary unlocking operation, before the handle engages and moves the shelf and frame to paper-releasing position. When the parts are in this last position, the web is drawn to the ofiset 35 on the gage, and held while the carbons are drawn back. by the means" shown in the patent mentioned. The printed section is then cut off by turning the same against a blade 46 carried by the frame plates 9; and the new section of the web, with the carbons interleaved therein, having been positioned, the frame is swung back to normal, (Fig 4) position. When, on the return of the frame, the hooks l3 strike the bar 14, they are cammed over the latter by cam surfaces 48 at the ends of the hooks, and the springs 17, to effect automatic'lockmg.

folded or rocked backward against the ac-' tion of its spring 40, (as shown in Fig. 3), independently of the frame. This freedom of backward movement has the further advantage of permitting the bar to be 001- lapsed and held down for compactness in packing the machine.

It will be noted from the foregoing that the unlocking of the platen in the paperreleasing operation is, in effect, automatic, because itrequires no action other than that of throwing forward the platen and shelfcarrying frame.

ar1at1ons may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, 1

claim 1. In a typewriting machine, a carriage, a frame on said carriage having a bodily The return movement of the parts; may be i -a platen,

swinging movement in a direction at right angles to the direction of letter-feed movement of the carriage, a platen revolubly mounted in said frame to swing therewith,

means for locking the frame against such movement on the carriage, and means for unlocking and, in a single operation, swing ing the frame to throw the platen to a paperreleasing position on the carriage. 2. In a typewriting machine, a carriage, a frame on said carriage having a bodily swinging movement in a direction at right angles ,to the direction of letter-feed move ment of the carriage, a platen revolubly mounted in said frame to swing therewith, a latch on said frame for locking the frame in a normal Writing position on the carriage, and means for unlatching and swinging the frame with the platen to apaper-releasing position on the carriage.

3.111 a typewriting machine, a carriage, a platen, a frame on the carriage having the platen revolubly mounted therein, means for swinging said frame with the platen bodily in-an arcuate path between a normal writing position and a paper-releasing position on the carriage, means for locking" the platen frame in its normal writing position, means for automatically unlocking the frame in the operation of swinging it to papenreleasing position, and means in permanent position on the carriage for effecting line-space movement of the platen-,1

4. In a typewriting machine, carriage, a platen, a frame pivoted to the carria e and having theplaten revolnbly mounted therein, a latch for locking the frame down against the carriage in normal writing po sition on the latter, and a lever adapted to operate said latch to reiease the frame and to engage and swing the frame bodily in. an arcuate path to a paper-releasing posi tion.

5. In a typewriting machine, a carriage,

a platen, a frame pivoted to the carriage i the frame bodily in an arcuate path to a paper-releasing position on the carriage.

6. In a typewriting machine, a carriage, a frame pivoted to the carriage and having the platen revolnbly mounted therein, a latch for locking the frame down against the carriage in normal writing position on the latter, and a lever pivoted to said frame to have a limited rocking movement thereon, independently of the frame for unlocklng the frame, and thereafter engaging the frame at another point of the lever so-that further movement of the lever arcuate path withfihe platen -'means for guiding a web of paper to and around the platen, a gage formeasuring the length of written sheets to be cut from the web, means for-shifting the platento re.- lease the Web therefrom. for adjustment of the web after a section of the web .has been written and is to be removed, means for locking the platen in normal position against such shift, and means operated by movement ofthe gage to unlock the platen to permit such shift.

8. In a typewriting machine, a platen, means for guiding a web of paper to and around the platen, a gage for measuring the length of written sheets to be cut from the web, means for shifting the platen to release the web therefrom for adjustment of the web after a section of the web has been written and is to be .removed, and means for locking the platen in normal position against such shift, said gage serving as a means for unlocking the platen to permit shift Of the same, and as a means for shifting the platen When the same is unlocked.

9. Ina typeWriting--machine, a carriage, a platen, means for guiding a web of paper to .and around the platen, a papershelf in clin'ed upwardly and rearwardly from the platen to receiv the paper which has passed aroundthe pla en, agage secured to said shelf to measure lengths ofwritten sheets to be removed from the web, a frame shiftable on. the carriage and having the platen and paper shelf secured thereto, so that the shelf may be swung forward and the platen lifted to. afford a clear and relatively straight pathof movement for the web in the adjusting of the latter when sections thereof are removed, means for locking the platen frame in its normal printing position, and means whereby said gage may be set to unlock the platen frame when sheets are to be removed or positioned.

10. In a typewritingmachine, a carriage, a platen, feed rollers 'for guiding a Web of paper around the platen, a gage to measure lengths of written sheets to be removed from the web, a frame in which the platen: is revolubly mounted, said frame being shiftable on the carriage to release the web by removing the platen from the feedrollers. when lengths of the web are to be re 1 moved or positioned, means for locking the platen frame in normal printing position, and means actuated by the gage to unlock the platen frame when desired.

v 11. The combination with a platen, of

means for holding a web of paper against the platen, a frame in which the platen is mounted to be shiftable to and from said holding means so that the pressure on the paper may be relieved when desired, a gage for measuring lengths of Written sheets to be removed from the web, said gage being connected to the frame to serve as a means for shifting the latter when drawn forward, and being yieldingly held in normal position to permit backward movement thereof independently of the frame.

12. The combination with a platen, of means for holding a-web of paper against the platen, a frame in which the platen is mounted to be shiftable to and from said holding means so that the pressure on the paper may be relieved when desired, a gage pivoted to the shiftable frame for measuring lengths of written sheets to be removed from the web, a spring for yieldifigly holding the gage in normal paper-receiving po sition on the frame, and a stop on the frame to be engaged by the gage on movement of 'the latter forward from normal position,

whereby the gage may serve as a means for shlftmg the frame, the gage having back-' vward movement independently of the frame.

13.'In a typewritin machine, the combination, with a revoluble platen, and means for holding paper against said platen when in normal printing position; of means for loo k the platen when operated to so throw-.

said platen.

14. In a typewriting machine, the combination, with a revoluble platen, and means for holding paper against said platen when in normal printing position; of means for locking the platen in said position; a shaft for unlocking the platen, when rocked in one direction; a projection fixed to said shaft; and a member for throwing the platen bodily from normal position to re lease the paper, said member loosely mounted on said shaft and having a normal position in which it is engaged with said projection, so as to automatically rock said shaft and thereby unlock the platen when swung forwardly from suchposition to so throw said platen, said member arranged to disengage said projection and thereby move. independently of said shaft when swung backwardly from its said normal position.

15. In a typewriting machine, the combination, with arevoluble platen, x and means for holding paper against said platen when in normal printing position; of means for locking the platen in said position; a shaft for unlocking. the platen 1 JQQ BGQ when rocked in one direction; a pair of spaceol collars fixed to said shaft one of said collars having a lug thereon; and a member for lZhI'OWiHg the platen bodily from normal :5 position to release the paper, said member being loosely pivoted on said shaft between said collars so as to be held thereby against displacement, and being normally engaged Witnesses:

W. M. BYORKMAN, LYMAN D. BROUGHTON, 

